Medicom - Duraflor - Fluo. Varnish - Unit Doses, 32/Pk - BubblegumContains 5% sodium fluoride Prohibits tooth decay through high fluoride release Provides efficient cavity lining Minimizes hypersensitivity Reduce hypersensitivity for six months with Duraflor Fluoride Varnish. It is a dental varnish that utilizes the highest distillation of fluoride. The 5% sodium fluoride formula provides tremendous results by inhibiting tooth decay while acting as a cavity liner. The fluoride treatment is mixed with Xylitol to